ICS 29.240.99 CCS F 29 湖 DB43 南 省 地 方 标 准 DB43/T 19 9 7—2021 数字化电能计量装置整体误差 检测技术规范 Entirety error inspection specifications of digital electric energy metering devices 2021-02-20发布 湖南省市场监督管理局 2021-05-20实施 发 布 DB43/T 1997—2021 目 次 前言························································································································ Ⅲ 1 范围 ····················································································································· 1 2 规范性引用文件 ······································································································ 1 3 术语和定义 ············································································································ 1 4 缩略语 ·················································································································· 2 5 技术要求 ··············································································································· 2 5.1 数字化电能表工作误差 ······················································································· 2 5.2 模拟量输入合并单元工作误差 ·············································································· 2 5.3 电子式互感器工作误差 ······················································································· 2 5.4 数字化电能计量装置整体误差 ·············································································· 3 5.5 总电能示值组合误差 ·························································································· 4 5.6 数字化电能表时钟示值偏差 ················································································· 4 6 检测设备与条件 ······································································································ 4 6.1 检测设备要求 ··································································································· 4 6.2 检测条件 ········································································································· 5 7 检测内容与方法 ······································································································ 5 7.1 检测项目 ········································································································· 5 7.2 检测方法 ········································································································· 5 附录 A（资料性附录） 误差限制计算范例 ······································································· 8 附录 B（资料性附录） 误差检验原始记录 ······································································· 9 I DB43/T 1997—2021 II DB43/T 1997—2021 前 言 本文件按照 GB/T 1.1—2020 给出的规则起草。 请注意本文件的某些内容可能涉及专利，本文件的发布机构不承担识别专利的责任。 本文件由湖南省市场监督管理局提出并归口。 本文件起草单位：湖南省计量检测研究院、国网湖南省电力有限公司供电服务中心（计量中心） 、 怀化建南机器厂有限公司、国网湖南省电力有限公司营销部、邵阳市计量测试检定所、国网湖南省电力 有限公司益阳供电分公司、国网益阳供电公司客户服务中心（计量中心）、国网湖南省电力有限公司岳 阳供电分公司 本文件主要起草人：朱才溢、谢小军、李恺、解玉满、谈丛、黄红桥、王海元、杨方、汪凤娇、李 鑫、肖湘奇、石剑均、曾强、贺俊宾、陈虹、文月月、刘飞翔、朱舟、欧阳洁、陈石东、李安喜、曾艳、 王红亮、易明、赵迎庆。 III DB43/T 1997—2021 IV DB43/T 1997—2021 数字化电能计量装置整体误差检测技术规范 1 范围 本文件规定了 50Hz 或 60Hz 电网中新装及运行中的数字化电能计量装置性能要求、整体误差检验要 求、检验方法及检验结果的处理。 本文件适用于数字化电能计量装置的整体误差检验工作。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件， 仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本 文件。 GB/T 17215.303—2013 交流电测量设备特殊要求第 3 部分：数字化电能表 GB/T 20840.7—2007 互感器第 7 部分：电子式电压互感器 GB/T 20840.8—2007 互感器第 8 部分：电子式电流互感器 DL/T 281—2012 合并单元测试规范 DL/T 282—2012 合并单元技术条件 DL/T 860.91 变电站通信网络和系统第 9-1 部分：特定通信服务影射（SCSM）-通过单向多路点 对点串行通信链路的采样值 DL/T 860.92 变电站通信网络和系统第 9-2 部分：特定通信服务影射（SCSM）-通过 IS0/IEC8802-3 的采样值 DL/T 1394—2014 电子式电流、电压互感器检测装置技术条件 DL/T 1664—2016 电能计量装置现场检验规程 DL/T 1665—2016 数字化电能计量装置现场检测规范 3 术语和定义 GB/T 17215.303—2013、GB/T 20840.7—2007、GB/T 20840.8—2007、DL/T 282—2012 界定的以及下列术语和定义适用于本文件。 3.1 数字化电能计量装置 digital electric energy metering device 由数字化电能表、数字输出型电子式互感器（以下简称电子式互感器）或传统互感器及模拟量输入 合并单元，以及连接他们的数字化传输回路组成的用于电能计量的装置。 3.2 模拟量输入合并单元 merging unit with analogue input 具备交流电压、交流电流模拟量输入通道的合并单元。 3.3 电子式互感器 electronic instrument transformer 1 DB43/T 1997—2021 一种装置，由连接传输系统和二次转换器的一个或多个电流或电压传感器组成，用以传输正比于被 测量的量，供给测量仪器、仪表和继电保护或控制装置。在数字接口的情况下，由一组电子式互感器共 用一台合并单元完成此功能。 [GB/T 20840.8—2007，定义 3.1.1] 3.4 比值误差 ratio error 电子式互感器测量电流/电压时出现的误差，它由于实际变比不等于额定变比而产生。[GB/T 20840.8—2007，定义 3.1.25] 3.5 相位差 phase displacement 对模拟量输出，为一次电流相量和二次输出相量的相位之差，相量方向选定为在额定频率下理想互 感器的相位差角等于其额定值。当二次输出相量超前于一次电流相量时相位差为正值。它通常用分或厘 弧表示。 对数字量输出，为一次端子某一电流的出现瞬时与所对应数字数据集在 MU 输出的传输起始瞬时之 时间差(用额定频率的角度单位表示)。 [GB/T 20840.8—2007, 定义 3.1.26] 3.6 相位误差 phase error 等于相位差减去由额定相位偏移和额定延迟时间构成的相位移。相位误差是对额定频率而言。 由于数字量输出要求与时钟脉冲同步，相位误差是时钟脉冲与数字量传输值对应的一次电压/电流 采样瞬时之时间差（用额定频率的角度单位表示） 。 相位误差通常用分或